Stdle #16 · iteration · 2026-06-22
What does this Rust snippet output?
A past puzzle — fully playable. 4 attempts, hints on wrong guesses.
fn main() { let v = vec![1, 2, 3, 4, 5]; let c = v.iter() .filter(|&&x| x % 2 == 0) .count(); println!("{}", c);}Iteration